U.N. nuclear watchdog says Iran could enrich uranium again in 'a matter of months'

Rafael Mariano Grossi, director general of the International Atomic Energy Agency, arrives for an IAEA meeting in Vienna, Austria, on June 23.

Rafael Mariano Grossi, director general of the International Atomic Energy Agency, told CBS that Iran had a "a very vast ambitious" nuclear program.

(Image credit: Christian Bruna)